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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        tr.bg {
            background-color: #E9FAFF;
            color: #4F86BC;
        }

        tr.bg1 {
            background-color: #CCCCCC;
        }

        table {
            border-collapse: collapse;
            width: 50%;
            height: 50%
        }
    </style>
</head>

<body>
    <table border="1">
        <tr class="bg1">
            <th colspan="7">课程表</th>
        </tr>
        <tr class="bg">
            <th>时间\日期</th>
            <th>1</th>
            <th>2</th>
            <th>3</th>
            <th>4</th>
            <th>5</th>
        </tr>
        <tr class="bg">
            <th rowspan="2">上午</th>
            <th>语文</th>
            <th>数学</th>
            <th>英语</th>
            <th>美术</th>
            <th>音乐</th>
        </tr>
        <tr class="bg">
            <th>语文</th>
            <th>数学</th>
            <th>英语</th>
            <th>美术</th>
            <th>音乐</th>
        </tr>
        <tr>
            <th colspan="7"></th>
        </tr>
        <tr class="bg">
            <th rowspan="2">下午</th>
            <th>语文</th>
            <th>数学</th>
            <th>英语</th>
            <th>美术</th>
            <th>音乐</th>
        </tr>
        <tr class="bg">
            <th>语文</th>
            <th>数学</th>
            <th>英语</th>
            <th>美术</th>
            <th>音乐</th>
        </tr>
    </table>
</body>

</html>